Meghan Trainor performs onstage during iHeartRadio Jingle Ball 2014 hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on Dec. 12, 2014, in Manhattan.

Photo Credit: Getty Images / Kevin Kane

5 Seconds of Summer performs onstage during iHeartRadio Jingle Ball 2014 hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on Dec. 12, 2014, in Manhattan.

Photo Credit: Getty Images / Kevin Kane

Musician Ryan Tedder of OneRepublic performs in the audience during iHeartRadio Jingle Ball 2014 hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on December 12, 2014, in Manhattan.

Gwen Stefani performs onstage during iHeartRadio Jingle Ball 2014, hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on December 12, 2014 in New York City.

Photo Credit: Getty Images / Kevin Kane

Pharrell Williams performs onstage during iHeartRadio Jingle Ball 2014, hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on December 12, 2014 in New York City.

Photo Credit: Getty Images / Kevin Kane

Shawn Mendes performs onstage during iHeartRadio Jingle Ball 2014, hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on December 12, 2014 in New York City.

Photo Credit: Getty Images / Mike Coppola

Brent Kutzle and Ryan Tedder of OneRepublic perform onstage during iHeartRadio Jingle Ball 2014, hosted by Z100 New York and presented by Goldfish Puffs at Madison Square Garden on December 12, 2014 in New York City.